Delete a schedule.
AI agents call schedule_delete to permanently remove resources in Semaphore — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a schedule is an irreversible action. Once removed, the schedule configuration is lost and any automated tasks tied to it will no longer run. This could disrupt automation workflows for Ansible, Terraform, and other automation pipelines managed through Semaphore, making it high severity.
From the tool's definition 'Delete a schedule' - explicitly removes a schedule permanently
Attacks that exploit this kind of access
Delete a schedule. It is categorised as a Destructive tool in the Semaphore MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Semaphore MCP server in PolicyLayer and add a rule for schedule_delete: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Semaphore. Nothing to install.
schedule_delete is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the schedule_delete rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for schedule_delete. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
schedule_delete is provided by the Semaphore MCP server (vitexsoftware/semaphore-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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